Fix success response code CM Handle Registration

- changed registartion response code to 204 NO_CONTENT
- improved exception handling for registration API
- fixed failing csit related to changed response code
- updated the release notes for CPS-892 and CPS-837

Issue-ID: CPS-892
Change-Id: I616e340debf1583b058e7ae6b8960972eec00f3e
Signed-off-by: mpriyank <priyank.maheshwari@est.tech>

1 files changed, 2 insertions, 2 deletions

diff --git a/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/NetworkCmProxyDataServiceImpl.java b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/NetworkCmProxyDataServiceImpl.java
index 38f8e1707d..3c8d8bc3b7 100755
--- a/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/NetworkCmProxyDataServiceImpl.java
+++ b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/NetworkCmProxyDataServiceImpl.java
@@ -92,8 +92,8 @@ public class NetworkCmProxyDataServiceImpl implements NetworkCmProxyDataService
             }
         } catch (final JsonProcessingException | DataNodeNotFoundException e) {
             final String errorMessage = String.format(
-                    "Error occurred while processing the CM-handle registration request [%s] ,caused by : [%s]",
-                    dmiPluginRegistration, e.getMessage());
+                    "Error occurred while processing the CM-handle registration request, caused by : [%s]",
+                    e.getMessage());
             throw new DataValidationException(errorMessage, e.getMessage(), e);
         }
     }